Zenith Data Systems Z-171 PC Series Service Manual page 68

Page 5-6
Configuration
Main Logic Board
Table 5-2: Main Logic Board Jumper Settings
JUMPER SETTING DESCRIPTION
JMP1 Closed Printer port interrupt.
JMP2 Open Test purposes only.
JMP3 Closed Printer port select.
JMP4 Closed Serial port select.
JMP5 Open Test purposes only.
JMP6 Open 80C39 external ROM.
JMP7 Closed Serial port interrupt.
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Figure 5-3: Main Logic Board Jumper Locations